Dry-kiln



N0. 6l0,|00. Patented Aug. 30, I898. J. M..SPROUT. DHY KILN.

(Application filed July 12 1897.)

(No Model.) 2 Sheets-Sheet l.

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nrrnn STATES P TENT @rrrcn.

JAMES M. SPROUT, OF MUNOY, PENNSYLYANIA.

SPECIFICATION formingpart of Letters Patent No; 610,100, dated August 30, 1898.

' Application filed July 12, 1897. Serial No. 644,176- (N0 model.) i

or drawn from the 'lumber or other material,

being dried. The invention aims to accomplish this by means of a kiln which will be extremely simple in its construction throughout, the condensation being obtained by means of condensing-plates set at an angle above the space containing the lumber or other material to be dried. Another feature of my improved construction is that the air thus freed from its moisture may be conducted downwardly between an auxiliary wall and the wall proper of the drier, where it is dis charged again into the drier proper in contact with the heating apparatus; and to this end the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more specifically described, and particularly pointed outin the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, wherein like letters of reference indicate similar parts throughout the several views, in which- Figure 1 is a transverse vertical sectional view of my improved kiln. Fig. 2 is a side view of the kiln, partly broken away, showing a portion of the condensing-plates in per? spective. Fig. 3 is a cross-sectional view of the condensing-plates and their supports, showing their arrangement.

Referring now to the drawings by referenceletters, a represents the kiln, which may be of any desired capacity and through which the tracks are run to receive the trucks carrying the lumber or other material to be dried. Arranged underneath the floor I) are the heating-pipes c, which may be of any desired style of arrangement and fed with steam from groove f, formed in the upper face of an auxiliary rafter g, which is arranged midway between the rafters d and some distance below the same, so as to give the condensingplates an angle of about forty-five degrees when in their position within the V-shaped groove of the auxiliary rafter. These auxiliary or grooved rafters rest upon the side walls hof. the kiln and by reason of the inclined position of the same serve to carry off all con densed' moisture which accumulateson the inclined condensing-plates, and is carried by same into the groove of the rafters and delivered outside of the kiln, where it may be carried to any point desired.

I have also shown an auxiliary wall k,which extends vertically with the outer wall it to the height'of the sameand is there inclined inwardly a short distance into the kiln, said wall being provided at its base with a series of openings Z Z. By this construction an air space or flue m is provided between the two walls, which, by reason of the draft created through the openings at the bottom of the auxiliary wall, causes the cooled air to circulate through the fiue, where it is again discharged into the kiln proper and into contact with the heatingpipes to be heated before passing again through. the material being dried.

. I have also provided a means for the circulation of cool air over the 'upper surface of the condensingplates by means of the V- shaped passage from eaves to apex of roof between each set of rafters and under the roof proper, this V-shaped passage to connect with the cupola n, arranged over the apex of the roof, the sides of which are provided with apertures o to permit the escape of the air therefrom as well as at the ends, which may be left open, if desired.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a dry-kiln, the combination with the kiln proper, of condensing-plates formed of any suitable material, set at an angle above the kiln and resting against the rafters and upon an auxiliary rafter or support which is grooved and lined with some waterproof material, to carry off the condensed moisture, substantially as shown and described.

2. A dry-kiln, consisting of the kiln proper,

ate rafters, condensing-plates, each supported by an upper and a lower rafter and forming the ceiling of the kiln, whereby are formed a series of passage-ways between said roof and ceiling, and a continuous current of cool air is brought in contact with the condensingplates, substantially as shown and described. In testimony whereof I affix my signature in presence of two witnesses.

JAMES M. SPROUT.

Witnesses:

W. H. TIMMERMANN, THos. M. BOYD, J r. 

